feat: add HDRI

1 files changed, 31 insertions, 0 deletions

diff --git a/src/platform/opengl/opengl_texture.h b/src/platform/opengl/opengl_texture.h
index 705d770..5e5f6b2 100644
--- a/src/platform/opengl/opengl_texture.h
+++ b/src/platform/opengl/opengl_texture.h
@@ -34,4 +34,35 @@ namespace Donut
         uint32_t    m_renderer_id;
         GLenum      m_internal_format, m_data_format;
     };
+
+    class OpenGLCubemapTexture 
+        : public CubemapTexture
+    {
+    public:
+        OpenGLCubemapTexture(uint32_t width, uint32_t height);
+        OpenGLCubemapTexture(const std::string& path);
+        virtual ~OpenGLCubemapTexture();
+
+        virtual uint32_t get_width()      const override { return m_width; }
+        virtual uint32_t get_height()     const override { return m_height; }
+        virtual uint32_t get_renderer_id() const override { return m_renderer_id; }
+
+        virtual void set_data(void* data, uint32_t size)                          override;
+        virtual void bind(uint32_t slot = 0)                               const override;
+        virtual void bind_as_image(uint32_t slot = 0, bool read_only = false) const override;
+
+        virtual bool operator==(const Texture& other) const override
+        {
+            return m_renderer_id == other.get_renderer_id();
+        }
+
+    private:
+        void load_hdri(const std::string& path);
+        void convert_equirectangular_to_cubemap(float* hdr_data, int width, int height);
+
+        std::string m_path;
+        uint32_t    m_width, m_height;
+        uint32_t    m_renderer_id;
+        GLenum      m_internal_format, m_data_format;
+    };
 }